在C中分割四個文件中的視頻＃

Question

我正在研究如何將視頻分成四個片段。我見過很多解決方案和庫。我一直在尋找這個庫：

https://github.com/AydinAdn/MediaToolkit

這是分裂的視頻

var inputFile = new MediaFile {Filename = @"C:\Path\To_Video.flv"}; 
var outputFile = new MediaFile {Filename = @"C:\Path\To_Save_ExtractedVideo.flv"}; 

using (var engine = new Engine()) 
{ 
    engine.GetMetadata(inputFile); 

    var options = new ConversionOptions(); 

    // This example will create a 25 second video, starting from the 
    // 30th second of the original video. 
    //// First parameter requests the starting frame to cut the media from. 
    //// Second parameter requests how long to cut the video. 
    options.CutMedia(TimeSpan.FromSeconds(30), TimeSpan.FromSeconds(25)); 

    engine.Convert(inputFile, outputFile, options); 
} 

的代碼分裂只是一個片段的代碼。有沒有辦法將它分成四部分？

親切的問候

PS：該解決方案必須是C＃和已經看到了Directshow的解決方案。

Answer 1

我以前沒有使用過這個庫，但這是我如何去做的。

---

var inputFile = new MediaFile {Filename = @"C:\Path\To_Video.flv"}; 
var outputName = "C:\Path\To_Save_ExtractedVideo"; 
var outputExtension = ".flv"; 

double t = inputFile.Length/4; //length of parts -- need to use method to get file playtime length 

for(int i=0;i<4;i++){ 

    var engine = new Engine() 
    engine.GetMetadata(inputFile); 

    var options = new ConversionOptions(); 

    // This example will create a 25 second video, starting from the 
    // 30th second of the original video. 
    //// First parameter requests the starting frame to cut the media from. 
    //// Second parameter requests how long to cut the video. 
    options.CutMedia(TimeSpan.FromSeconds(30 + (i*int.Parse(t))), TimeSpan.FromSeconds((i+1)*int.Parse(t))); 

    engine.Convert(inputFile, $"{outputName}_{i.ToString()}{outputExtension}, options); 

    engine.Destroy(); // Need to destroy object or close inputstream. Whichever the library offers 

    } 
}